Collins, T.K and P.G. Collins. Guide for the Pennsylvania Railroad with
an Extensive Map Including the Entire Route with All Its Windings, Objects
of Interest, and Information Useful to the Traveler. Privately Published,
1855.

Committee on Rules. Hearings before the Committee on Rules on Charges
against the Department of Justice by Louis E. Post and Others. Washington:
United States House of Representatives, 1920.

Countryman, Vern. “The History of the FBI: Democracy’s Development
of a Secret Police.” In Investigating the FBI. Pat Watters and
Stephen Gillers, Editors. Garden City, New York: Doubleday and Company, 1973.

Ely, Theo. N. and J. Elfreth Watkins. Catalogue of the Exhibit of the
Pennsylvania Railroad at the World’s Columbian Exposition. 1893.

Ennis, Edward J. “Government Control of Alien Enemies: Program for Control
of Aliens Carried Out with Firmness and Dispatch and with Continued Adherence
to Humanitarian Principles.” State Government. May 1942.

Groff, George G. “Description of Physical Features and Geology-Botany.” In History
of That Part of the Susquehanna and Juniata Valleys: Embraced in the Counties
of Mifflin, Juniata, Perry, Union, and Snyder in the Commonwealth of Pennsylvania.
Franklin Ellis, Editor. Philadelphia: Everts, Peck, and Richards, 1886.

Haines, Gerald K. and David A. Langbart. Unlocking the Files of the FBI:
A Guide to Its Records and Classification System. Wilmington, Delaware:
Scholarly Resources, 1993.

Jones, U.J. History of the Early Settlement of the Juniata Valley: Embracing
an Account of the Early Pioneers and the Trials and Privations Incident to
the Settlement of the Valley, Predatory Incursions, Massacres, and Abductions
by the Indians During the French and Indian Wars, and the War of the Revolution, &C. Harrisburg,
Pennsylvania: The Telegraph Press, 1855.

Kahn, David. Hitler’s Spies: German Military Intelligence in World
War II. New York: Macmillan, 1978.

Kessler, Ronald. The Bureau: The Secret History of the FBI. New York:
St. Martin’s Press, 2002.

Krammer, Arnold. Undue Process: The Untold Story of America’s German
Alien Internees. New York: Rowan and Littlefield Publishers, 1997.

Kurland, Philip B. and Gerhard Casper, Editors. “Petition for Writ of
Certiorari to the Court of Appeals for the District of Columbia.” Volume
39. Arlington, Virginia: University Publications of America, 1975.

Military Commission to Try Persons Charged with Offenses against the Law of
War and the Articles of War. Transcript of Proceedings before the Military
Commission to Try Persons Charged with Offenses against the Law of War and
the Articles of War. Washington: July 8 to July 31, 1942. Department
of History, University of Minnesota, 1942. www.soc.umn.edu. March 9, 2005.

Miller, Eric. “Altoona America.” www.newcolonist.com. April 5,
2005.

Miller, Randall M. and William Pencak, Editors. Pennsylvania: A History
of the Commonwealth. University Park: www.psupress.org. 2005.

Roosevelt, Franklin D. “Executive Order No. 9066, 1942: Authorizing
the Secretary of War to Prescribe Military Areas.” www.radford.edu. August
12, 2005.

Rosenman, Samuel I., Editor. The Public Papers and Addresses of Franklin
D. Roosevelt: War and Aid to Democracies: 1940. New York: The Macmillan
Company, 1940.

Rosenman, Samuel I., Editor. The Public Papers and Addresses of Franklin
D. Roosevelt with a Special Introduction and Explanatory Notes by President
Roosevelt: War and Aid to Democracies: 1940. New York: The Macmillan
Company, 1941.

Rosenman, Samuel I., Editor. The Public Papers and Addresses of Franklin
D. Roosevelt: Humanity on the Defensive: 1942. New York: Harper and
Brothers, 1950.

Schmitz, John Eric. Democracy under Stress: The Internment of German-Americans
in World War II. Raleigh, North Carolina: North Carolina State University,
1993.

Schotter, H.W. The Growth and Development of the Pennsylvania Railroad
Company: A Review of the Charter and Annual Reports of the Pennsylvania Railroad
Company: 1846 to 1926, Inclusive. Philadelphia: Allen, Lane, and Scott,
1927.

Schwartz, Sally. “A Mixed Multitude”: The Struggle for Toleration
in Colonial Pennsylvania. New York: New York University Press, 1987.

Seidel, David W. Personal letter to the author. November 27, 2006.

Sipes, William B. The Pennsylvania Railroad: Its Origin, Construction,
Conditions, and Connections Embracing Historical, Descriptive, and Statistical
Notices of Cities, Towns, Villages, Stations, Industries, and Objects of
Interest on Its Various Lines in Pennsylvania and New Jersey. Philadelphia:
The Passenger Department, 1875.

Stevens, John. Documents Tending to Prove the Superior Advantages of Rail-Ways
and Steam-Carriages over Canal Navigation. Boston, Massachusetts: Harvard
Graduate School of Business Administration and The Railway and Locomotive
Historical Society, [1812] 1936.

Strickland, William. Reports on Canals, Railways, Roads, and Other Subjects,
Made to the Pennsylvania Society for the Promotion of Internal Improvement.
Philadelphia: H.C. Carey and I. Lea and The Pennsylvania Society for the
Promotion of Internal Improvement. 1826.

Swanberg, W.A. “The Spies Who Came in from the Sea.” American
Heritage, April 1970.

The Freeport Facts. January 8, 1942.

The John Edgar Thomson Foundation. “Financial Assistance for Daughters
of Deceased Railroaders.” www.utu.org. September 29, 2006.

The New York Times. “Travel for Aliens Made Easier Here; Applicants
for Permits Need Only One Personal Appearance, Renewals to Be Mailed.” January
7, 1942.

The Railroad Press. World Famous Horseshoe Curve. Hanover, Pennsylvania:
2006.

Theoharis, Athan G. and Jolin Stuart Cox. The Boss: J. Edgar Hoover and
the Great American Inquisition. Philadelphia: Temple University Press,
1988.

Ward, James A. “Thomas A. Scott.” Encyclopedia of American
Business History and Biography: Railroads in the Nineteenth Century.
Robert L. Frey, Editor. New York: Bruccoli, Clark, and Layman Books and Facts
on File, 1988.

Ward, James. “John Edgar Thomson and the Cult of Personality on the
Pennsylvania Railroad.” Railroad History. Volume 177. 1997.

Wilson, William Bender. “The Evolution, Decadence, and Abandonment of
the Allegheny Portage Railroad.” In A Publication Commemorating a
Visitation by Members and Friends of the Blair County Chapter and the Cambria
County Chapter, Sons of the American Revolution. Mahlon J. Baumgardner
and Floyd G. Hoenstine, Editors. Cresson, Pennsylvania: Pennsylvania Society
of the Sons of the American Revolution, 1952.

Wilson, William Bender. History of the Pennsylvania Railroad Company with
Plan of Organization, Portraits of Officials, and Biographical Sketches.
Volume II. Philadelphia: Henry T. Coates and Company, 1899.